Lac à la Truite
45.8067° N, 71.5872° W
Depth contours from the 1971 government survey. Not for navigation.
Download the depth map (SVG)Lac à la Truite, Quebec. 45.8067° N, 71.5872° W
Maximum depth 4.7 m (1971 survey). Scale bar on the map.
Not for navigation. Depths are from government surveys and may be outdated.
borealbound.ca/lakes/qc/lac-a-la-truite-near-val-des-sources/, compiled October 9, 2026
- Canadian Geographical Names Database, Natural Resources Canada. Contains information licensed under the Open Government Licence – Canada.
- HydroLAKES v1.0, Messager et al. 2016 / WWF HydroSHEDS. Licensed under CC BY 4.0.
- Census boundaries and population, 2021, Statistics Canada. Adapted from Statistics Canada. This does not constitute an endorsement by Statistics Canada.
- Géobase des bathymétries de lac du Québec (GBLQ), Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs. Licensed under CC BY 4.0. Source: Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP), Données Québec.
- États trophiques des lacs (RSVL), Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs. Licensed under CC BY 4.0. Source: Ministère de l’Environnement, de la Lutte contre les changements climatiques, de la Faune et des Parcs (MELCCFP), Données Québec.
- City page weather forecasts and alerts, Environment and Climate Change Canada. Contains data from Environment and Climate Change Canada (ECCC Data Servers End-use Licence).
Lac à la Truite is 4.7 m deep at its deepest point, shallower than 93% of the 1,506 surveyed lakes in Quebec. It covers 0.32 km² and lies 6.5 km south of Saints-Martyrs.
- Maximum depth
- 4.7 msurveyed 1971
- shallower than 93% of the 1,506 surveyed lakes in Quebec
- Area
- 0.32 km²
- larger than 50% of the 29,407 lakes in Quebec
- Shoreline
- 2.3 km
- shorter than 76% of the 29,407 lakes in Quebec
- Water clarity
- 1.5 mSecchi depth, 2025
- less clear than 94% of the 805 monitored lakes in Quebec
- Elevation
- 341 m
Today on the water
4.3 °C
Observed at Val-des-Sources, as of 3:08 a.m. EDT
calm Estimated waves, next 12 hours: up to 0.1 m. Around 4 a.m., wind from the west: the west shore is sheltered, waves build toward the east shore.
| Time | 4 a.m. | 7 a.m. | 10 a.m. | 1 p.m. | 4 p.m. | 7 p.m. | 10 p.m. | 1 a.m. |
|---|---|---|---|---|---|---|---|---|
| Wind km/h | W 10 | W 10 | W 20 | W 20 | W 20 | W 20 | W 15 | W 10 |
| Gusts km/h | 40 | 40 | 40 | |||||
| Waves (est.) m | 0.1 | 0.1 | 0.1 | 0.1 | ||||
| Temp. °C | 9 | 8 | 9 | 11 | 10 | 7 | 5 | 3 |
| Precip. % | 60 | 40 | 40 | 40 | 40 | 40 | 0 | 0 |
Tonight: Mainly cloudy with 60 percent chance of showers. Risk of a thunderstorm this evening. Wind west 20 km/h gusting to 40 becoming light this evening. Low 8.
Weather: Val-des-Sources (local forecast), as of 3:09 a.m. EDT
Sun and moon
- Civil dawn
- 6:25 a.m.
- Sunrise
- 6:55 a.m.
- Sunset
- 6:11 p.m.
- Civil dusk
- 6:41 p.m.
- Moonrise
- 5:45 a.m.
- Moonset
- 5:29 p.m.
- Moon
- Waning crescent, 1% lit
Follow this lake by email: a weekly summary of conditions.
Depth
37% of Lac à la Truite is shallower than 1 m.
How to read it: the lake’s area is sorted from the shore to the deepest point. Where the curve is flat, large areas share one depth (flats and weed beds); where it drops, depth changes quickly (drop-offs).
The government depth survey from 1971 records a maximum depth of 4.7 m, drawn from 5 depth contours.
- Download the depth map (SVG)Printing this page gives the map on one sheet, with scale and sources.
- Official government depth map (PDF)
Not for navigation. Depths are from government surveys and may be outdated.
Water
Trophic status from the latest monitoring: meso-eutrophic (transition).
Clarity was measured with a Secchi disk in 2 years between 2024 and 2025; the latest annual mean is 1.5 m.
Follow this lake
Every Friday by email: the Environment Canada forecast and any weather alerts in effect.